聚酯-聚酰胺6中空桔瓣超细纤维/Lyocell纤维非织造复合材料的制备与性能

朵永超; 钱晓明; 赵宝宝; 吕淑扬

doi:10.13801/j.cnki.fhclxb.20200806.002

聚酯-聚酰胺6中空桔瓣超细纤维/Lyocell纤维非织造复合材料的制备与性能

doi: 10.13801/j.cnki.fhclxb.20200806.002

1.
天津工业大学　纺织科学与工程学院，天津 300387
2.
安徽工程大学　纺织服装学院，芜湖 241000

基金项目: 国家自然科学基金(U1607117)；天津市应用基础与前沿技术计划项目(16JCZDJC36400)；天津市科技计划项目(17PTSYJC00150)

详细信息

通讯作者:
钱晓明，博士，教授，博士生导师，研究方向为新型非织造材料制备技术、服装功能与舒适性　E-mail：qxm@tiangong.edu.cn

中图分类号: TS174.8
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出版历程
- 收稿日期: 2020-05-25
- 录用日期: 2020-07-29
- 网络出版日期: 2020-08-06
- 刊出日期: 2021-04-08

Preparation and properties of polyester-polyamide 6 hollow segmented-pie microfiber/Lyocellfiber non-woven composites

1.
School of Textiles Science and Engineering, Tiangong University, Tianjin 300387, China
2.
School of Textile and Clothing, Anhui Polytechnic University, Wuhu 241000, China

摘要

摘要: 采用纺粘技术制备聚酯-聚酰胺6(PET-PA6)双组份中空桔瓣纤维，并与Lyocell纤维网复合，经高压水刺制备双层复合结构的PET-PA6/Lyocell非织造材料，研究了纤维复合比例及面密度对复合非织造材料性能的影响。结果表明：PET-PA6/Lyocell复合非织造材料具有明显的三维立体结构和双层复合结构，PET-PA6纤维裂离后纤维等效直径介于3.60~6.50 μm之间，Lyocell纤维的直径介于9.30~11.50 μm之间，且有部分原纤化的微原纤维。面密度一定时，PET-PA6/Lyocell非织造材料相比于PET-PA6非织造材料，亲水性能有明显的提升，当PET-PA6与Lyocell纤维含量比值为1∶1时(面密度为160 g/m²)，透气率为249.47 L/(cm²·s)，提升117.83%；透湿率为4 035 g/(m²·24 h)，提升36.01%；柔软度为4.39 mm，提升67.56%；同时力学性能有所增加，纵横强力比由1.5降至1.2，相差幅度明显降低；但热稳定性有略微的下降。随着的面密度增加，复合非织造材料的透气透湿性能逐渐降低，柔软度降低，力学性能有所增强。Lyocell纤维的复合使非织造材料的综合性能有了明显的提升，非织造布的三维立体结构和双层复合结构与天然皮革的微观结构相似，有望在超细纤维合成革基布领域得到应用。
- PET-PA6桔瓣纤维 /
- Lyocell纤维 /
- 水刺复合 /
- 非织造材料 /
- 透湿性能 /
- 力学性能
Abstract: Polyester-polyamide 6 (PET-PA6) bicomponent hollow segmented-pie PET-PA6 microfiber was prepared by spunbond technology, and composited with Lyocell fibers web, and PET-PA6/Lyocell composite nonwoven materials with double-layer composite structure were prepared by high-pressure spunlace. The effects of fiber composite ratio and areal density on the performance of composite nonwoven materials were studied. The results show that the PET-PA6/Lyocell composite nonwoven material has an obvious three-dimensional structure and double-layer composite structure. After spunlacing, the fiber equivalent diameter of PET-PA6 fiber is between 3.60 and 6.50 μm, the diameter of Lyocell fiber is between 9.30 and 11.50 μm, and some fibrillation microfibrils appear. At the same areal density, PET-PA6/Lyocell nonwoven material is compared with PET-PA6 nonwoven material, the hydrophilic property has been significantly improved. When the content ratio of PET-PA6 and Lyocell fiber is 1∶1 (gram weight is 160 g/m²), the air permeability is 249.47 L/(cm²·s), increased by 117.83%; the water vapor permeabi-lity is 4 035 g/(m²·24 h), increased by 36.01%; the softness is 4.39 mm, increased by 67.56%; at the same time, the mechanical properties have been increased, and the aspect ratio of tensile strength is reduced from 1.5 to 1.2, and the phase difference is significantly reduced; but the thermal stability is slightly reduced. As the areal density increasing, the air permeability and water vapor permeability of the composite nonwoven material are gradually decreased, the softness is decreased, and the mechanical properties are increased. The combination of Lyocell fibers have significantly improved the overall performance of nonwoven materials. The three-dimensional and double-layer composite structure of nonwoven fabrics are similar to the microstructure of natural leather, and are expected to be applied in the field of microfiber synthetic leather base.
- PET-PA6 segmented-pie fiber /
- Lyocell fiber /
- hydroentanglement /
- nonwoven material /
- water vapor permeability /
- mechanical performance

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图 1 聚酯-聚酰胺6(PET-PA6)/Lyocell复合非织造材料制备工艺

Figure 1. Preparation process of polyester-polyamide 6 (PET-PA6)/Lyocell nonwoven composite

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图 2 PET-PA6/Lyocell复合非织造材料的SEM图像

Figure 2. SEM images of surface morphology of PET-PA6/Lyocell nonwoven composite

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图 3 PET-PA6和Lyocell纤维的SEM图像及直径分布

Figure 3. SEM images of fiber and fiber diameter distribution of PET-PA6 and Lyocell

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图 4 PET-PA6/Lyocell复合非织造材料的DSC曲线

Figure 4. DSC curves of PET-PA6/Lyocell nonwoven composite

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图 5 PET-PA6/Lyocell复合非织造材料的TGA曲线

Figure 5. TGA curves of PET-PA6/Lyocell nonwoven composite

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图 6 PET-PA6和PET-PA6/Lyocell复合非织造材料的透气性能

Figure 6. Air permeability of PET-PA6 and PET-PA6/Lyocell nonwoven composite

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图 7 PET-PA6/Lyocell复合非织造材料的水接触角

Figure 7. Water contact angle of PET-PA6/Lyocell nonwoven composite

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图 8 PET-PA6/Lyocell复合非织造材料的透湿性能

Figure 8. Water vapor permeability of PET-PA6/Lyocell nonwoven composite

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图 9 PET-PA6和PET-PA6/Lyocell复合非织造材料的柔软度

Figure 9. Sofeness of PET-PA6 and PET-PA6/Lyocell nonwoven composite

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表 1 Lyocell短纤的基本性能

Table 1. Performance of Lyocell staple fiber

Performance	Numerical value
Length/mm	45-50
Dry strength/(cN·tex⁻¹)	29.5
Dry elongation/%	14.8

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表 2 PET-PA6/Lyocell复合非织造材料的设计参数

Table 2. Parameters of PET-PA6/Lyocell nonwoven composite

Sample	Double-layer nonwoven composite		PET-PA6/Lyocell nonwoven density/(g·m⁻²)
Sample	PET-PA6 fiber web density/(g·m⁻²)	Lyocell fiber web density/(g·m⁻²)	PET-PA6/Lyocell nonwoven density/(g·m⁻²)
M0	100, 120, 140, 160	0	100, 120, 140, 160
M1	80	20	100
M2	80	40	120
M3	80	60	140
M4	80	80	160

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表 3 PET-PA6/Lyocell复合非织造材料的力学性能

Table 3. Mechanical properties of PET-PA6/Lyocell nonwoven composite

Sample	Tensile strength/N		Elongation at break/%		Tear strength/N
Sample	CD-section	TD-section	CD-section	TD-section	CD-section	TD-section
PET-PA6 100	328.33	212.98	47.73	60.12	31.35	18.44
PET-PA6 120	392.87	263.09	46.27	66.93	35.91	21.14
PET-PA6 140	468.21	309.93	48.72	68.43	37.46	22.04
PET-PA6 160	538.72	352.10	53.73	72.13	40.74	23.96
Lyocell 100	416.98	362.07	57.11	65.40	35.22	28.87
Lyocell 120	498.94	447.25	63.58	66.38	40.34	33.17
Lyocell 140	594.63	526.88	65.01	70.77	42.09	34.57
Lyocell 160	684.17	598.57	68.52	72.90	45.77	37.62
PET-PA6/Lyocell 100	367.82	299.04	54.64	63.52	34.63	26.64
PET-PA6/Lyocell 120	467.37	389.48	58.24	65.36	37.95	29.19
PET-PA6/Lyocell 140	547.93	460.45	63.85	69.24	40.89	32.71
PET-PA6/Lyocell 160	608.69	529.30	66.36	71.57	45.43	37.86

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